• LM2678T-ADJ TO220-7
LM2678T-ADJ TO220-7

LM2678T-ADJ

Conv DC-DC 8V to 40V Step Down Single-Out 1.2V to 37V 5A 7-Pin(7+Tab) TO-220 Tube

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  • Part Number : LM2678T-ADJ

  • Package/Case : TO220-7

  • Brands : TI

  • Components Categories : Voltage Regulators - DC DC Switching Regulators

  • Datesheet : LM2678T-ADJ DataSheet (PDF)

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Overview of LM2678T-ADJ

The LM2678T-ADJ is an adjustable step-down voltage regulator IC that provides high efficiency and flexibility in voltage regulation applications. With its adjustable output voltage capability, this IC is suitable for various power management and voltage conversion tasks.

Pinout

(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

  • VIN: Input voltage
  • GND: Ground
  • VOUT: Output voltage
  • ADJ: Adjustable pin for setting the output voltage
  • EN: Enable pin for controlling the regulator
  • SS/TR: Soft-start/Tracking pin

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the LM2678T-ADJ IC for a visual representation.

Key Features

  • Adjustable Output Voltage: The LM2678T-ADJ allows for the adjustment of the output voltage to meet specific requirements in different applications.
  • High Efficiency: With its step-down topology, this voltage regulator offers high efficiency in voltage conversion, minimizing power loss and heat dissipation.
  • Wide Input Voltage Range: Operates with input voltages ranging from XXV to XXV, making it versatile for various power supply designs.
  • Enable Function: The EN pin enables users to control the regulator's operation, allowing for power saving modes or on/off functionality.
  • Short Circuit Protection: Includes built-in short circuit protection to safeguard the regulator and connected components in case of faults.

Note: For detailed technical specifications, please refer to the LM2678T-ADJ datasheet.

Application

  • Power Management: Ideal for voltage regulation and power management in electronic circuits and systems.
  • Battery Charging: Suitable for charging circuits that require adjustable and efficient voltage regulation.
  • DC-DC Conversion: Used in DC-DC conversion applications for generating stable output voltages from varying input sources.

Functionality

The LM2678T-ADJ is a versatile adjustable voltage regulator that provides efficient and reliable voltage regulation in various electronic applications. It offers flexibility in output voltage settings and is designed for ease of use in power management tasks.

Usage Guide

  • Input Power: Connect the VIN pin to the input voltage source within the specified range.
  • Output Voltage Setting: Adjust the output voltage using the ADJ pin based on the desired voltage level.
  • Enable Control: Use the EN pin to enable or disable the regulator as needed.

Frequently Asked Questions

Q: Can the LM2678T-ADJ handle high input voltages?
A: The LM2678T-ADJ is designed to operate within specific input voltage limits. Ensure the input voltage does not exceed the recommended range for proper functionality.

Q: Is the LM2678T-ADJ suitable for automotive applications?
A: Yes, the LM2678T-ADJ can be used in automotive applications where flexible voltage regulation is required for onboard electronics.

Equivalent

For similar functionalities, consider these alternatives to the LM2678T-ADJ:

  • LM2940T: A fixed output voltage regulator IC suitable for applications requiring specific output voltage levels.
  • LM7805: This fixed voltage regulator IC provides a stable 5V output for applications with consistent voltage requirements.

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Vin (min) (V) 8 Vin (max) (V) 40
Vout (min) (V) 1.23 Vout (max) (V) 37
Iout (max) (A) 5 Iq (typ) (mA) 4.2
Switching frequency (min) (kHz) 260 Switching frequency (max) (kHz) 260
Features Frequency synchronization, Over Current Protection Operating temperature range (°C) -40 to 125
Rating Catalog Regulated outputs (#) 1
Control mode Voltage mode Duty cycle (max) (%) 91
Type Converter

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